Where is the best location to ground a portable power generator providing supplementary power to a building for a show?

The best location to ground a portable power generator providing supplementary power to a building for a show is at the house service entry. Grounding the generator at this location ensures that the power supplied to the building is safely integrated with the existing electrical system.

When the generator is grounded at the house service entry, it establishes a common ground reference, which is crucial for the safe operation of electrical systems. This minimizes the risk of electrical shock and helps prevent issues such as grounding loops, which can affect equipment performance and safety. Additionally, grounding at the service entry allows for proper bonding with the building's grounding system, enhancing overall electrical safety during the operation of the generator.

While other locations may seem plausible, such as near the stage or at the generator itself, they do not provide the same level of safety and efficacy in integrating the power supply with the building's electrical system. Grounding at the electrical panel in the control room may also appear reasonable, but it could potentially disrupt the grounding path, leading to safety hazards. Thus, grounding at the house service entry is optimal for operational safety and compliance with electrical codes.